2143873983 has 4 divisors (see below), whose sum is σ = 2858498648. Its totient is φ = 1429249320.

The previous prime is 2143873951. The next prime is 2143873993. The reversal of 2143873983 is 3893783412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2143873983 - 2⁵ = 2143873951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143873993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357312328 + ... + 357312333.

It is an arithmetic number, because the mean of its divisors is an integer number (714624662).

Almost surely, 2^2143873983 is an apocalyptic number.

2143873983 is a deficient number, since it is larger than the sum of its proper divisors (714624665).

2143873983 is an equidigital number, since it uses as much as digits as its factorization.

2143873983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714624664.

The product of its digits is 870912, while the sum is 48.

The square root of 2143873983 is about 46301.9868148225. The cubic root of 2143873983 is about 1289.4358815838.

The spelling of 2143873983 in words is "two billion, one hundred forty-three million, eight hundred seventy-three thousand, nine hundred eighty-three".